Peacock fish are oviparous. The guppy will be hatched in the belly of the mother fish. The mother fish gives birth to young fish, which is oviparous fish. The guppy gives birth to small fish, but it does not absorb nutrients through the mother, but relies on its own yolk to provide nutrients. The guppy is a fish belonging to the genus Cephalotaxus of Cephalotaxus. The guppy is slender, and its morphological changes are mainly in the caudal fin. The common caudal fin shapes are round tail, pointed tail, shovel tail, etc. The guppy is native to Trinidad, Venezuela, northern Brazil and the West Indies in Central and South America. It likes weak alkaline water, can tolerate low temperature, and has a wide range of food habits, both animal bait and plant bait. Each time, it can produce 10 to 120 larvae, and the life span of guppies is short. Guppies are one of the popular aquarium ornamental fish, which have been commercialized in large quantities, and people have bred varieties with different colors and fins. These artificially cultivated fish require higher water temperature than their wild counterparts.